Rotary pump or motor applicable also as a fluid-meter.



Nb. 726,907. PATENTED MAY 5, 1903.,

. B. N. GULIGH.

' ROTARY PUMP OB. MOTOR APPLICABLE ALSO AS A FLUID METER.

APPLICATION FILED MAY 5, 1902. I N0 MODEL. 2 SHEETS-SHEET 1.

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7 APPLICATION FILED MAY 5, 1902. no MODEL. 2 sums-sum 2.

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ATENT Patented May 5, 1903.

FFIGE.

EDWARD NICHOLAS GULIOH, OF WEST HAMPSTEAD, LONDON, ENGLAND.

ROTARY PUMP R MOTOR APPLICABLE ALSO AS A FLUID-METER.

SPECIFICATION formingpart ornate Patent-No. 726,907, dated May 5, 1903.

Application filed May 5, 1 902.. .Serial No. 105,997. (No modeL) To allwhom it may concern..- 1' 7 Be it known that I, EDWARD NICHOLAS GU-LIOH, a subject of the King of Great Britain and Ireland, and a residentof 94Lyncroft Gardens, West Hampstead, in the county of London, England,have invented an Improved Rotary Pump or Motor Applicable .also as aFluid-Meter, ofwhich the following is a specification.

This invention relates to a rotary pump or motor, also applicable foruse as a meter for measuring fluids, of the type in which a drum or diskcarrying hinged vanes turns within a casing against which the vanesbear. My construction provides an apparatus of this kind which can bemade in a very inexpensive manner, iseasily repaired, and possessesgreat efficiency.

In order that this invention may be more readily understood, referenceis had to the accompanying sheet of drawings, in -which Figure l is anelevation of the apparatus with one side of the casing removed. Fig. 2is a cross-section with part of thedrum removed, and Fig. 3 shows amodified arrange ment of the wings or vanes.

The rotatingidrum A is concentric withthecasing B, both beingcylindrical, and in order to close the vanes 0 upon the drum at onepoint of their travel I provide a metal strip D, curved to form acresent-shaped division in the chamber and fixed to a projecting blockor abutment 19 between the inlet and outlet ports I). This strip D isformed with holes or openings (1, extending toward each end, so that thewater flows into or out. of the cylinder through a considerable portionof the circumference, the curved strip forming chambers d at each sideof the central division, into which the ports I) open. As the casinganddrum are concentric, the compartments between the hinged blades orvanes remain the same size through a considerable portion of therevolution, .contracting or expanding only while the water is passing inor out. As the vanes pass the central division or block they arecompletely closed down upon the drum, so that no liquid can pass fromone side to the other across the division. I also provide the drum ordisk A with a shallow annular groove or channel a, so that a space isleft behind each vane when closed, this channel preventing any dirt orgrit which may enter the apparatus interfering with the completeclosingofthe vanes. A small body of wateris also carried along by eachvane when closed,- owing'to this channel, and this assists in providinga water-tight joint for the vanes, more especially serviceable instarting the pump, as this pump canjbe started without difficulty whenempty, there being no nocessity for priming. f

The vanes O arehinge'd by solid beads c, at their ends dropping intocorrespondinglyformed channels in; the periphery of the drum. r

In order to make the apparatusreversible, so that it will act in bothdirections, alternate vanes may-be placedin a reverse manner, as shownin Fig. 3. This also provides a brake action, as any slip of the waterpast the rotating drum would act to raise the normally inoperative vanesand bring them into action. A i

If used as a meter, it is to be understood that-the usual countingmechanism is to be attached to the shaft carrying the drum A;

but the apparatus is more especially intende as a pump or water-motor.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a rotary pump, motor or meter having a rotating drum within acasing carrying hinged vanes expanding against the casing, a shallowgroove at extending completely around the periphery of the drum behindthe hinged vanes, substantially as and for the purposes specified.

2. A rotary pump, motor or meter, having a rotating drum within acasing, hinged vanes upon the rotating drum expanding against the casingand arranged to open al't'ernately in the opposite directions, andmeansfo'r cl'osing the vanes against the drum,substantially as hereindescribed and shown.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

EDWARD NICHOLAS GULIUH.

Witnesses:

R. A. WHITE, T. J. OsMAN.

